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Finding the Fourth Proportional to 381,379.92, 526,245.84 and 228,382.28

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Solution

The fourth proportional to 381,379.92, 526,245.84 and 228,382.28 is: 315,132.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,379.92 : 526,245.84 = 228,382.28 : x
  2. Step 2: Convert to fraction form
    381,379.92/526,245.84 = 228,382.28/x
  3. Step 3: Cross multiply
    381,379.92x = 526,245.84 × 228,382.28
  4. Step 4: Simplify right side
    381,379.92x = 120,185,224,779.72
  5. Step 5: Solve for x
    x = 120,185,224,779.72/381,379.92
  6. Step 6: Final answer
    x = 315,132.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.